A mixed-breed, 8-year-old male dog developed neutropenia, thrombocytopenia, and hyperglobulinemia. Bone marrow hyperplasia and splenic plasmacytosis were cytologically observed. The dog had never been outside of Tokyo or Shizuoka Prefecture. Splenectomy was performed to confirm and remove the cause of splenic plasmacytosis. A histopathological diagnosis of splenic plasmacytoma was made; however, serum protein electrophoresis showed polyclonal gammopathy. Further screening was performed, and Ehrlichia canis infection was confirmed. The dog was treated with doxycycline for 5 weeks. After the antibiotic therapy, no relapse of neutropenia, thrombocytopenia, hyperglobulinemia, or positive polymerase chain reaction result of E. canis infection was observed for 3 years. Careful attention should be given to ehrlichiosis when exploring the cause of pancytopenia or hyperglobulinemia, regardless of the travel history.
CITATION STYLE
Igarashi, H., Nagai, N., Yamada, Y., Ito, T., Neo, S., Goto-Koshino, Y., … Hisasue, M. (2024). A canine case of Ehrlichia canis infection without a history of being in an endemic area in Japan. Journal of Veterinary Medical Science. Japanese Society of Veterinary Science. https://doi.org/10.1292/jvms.23-0486
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